Hi all, would it be possible to have one of my forces be dependent on say, the x direction translation in forward dynamics? For example, I want the force to increase linearly with increasing x-translation.

Thanks!

I figured it out, I was manually applying the transformations when I should have been creating a transformation matrix, thanks!

Just confirming it's not you, I'm getting this problem too, very frustrating.

I cant see anything wrong with the code you have, Im guessing there's a problem in your BodySets.

Hi all, so what I've been doing is exporting the kinematics of a femur with a stationary tibia at certain degrees of flexion. Either I'm misinterpreting the way Opensim outputs translations and rotations or Opensim is reporting them wrongly. I have been exporting the rotations by the having the cent...

Hi all, is there a way to create a wrap object out of a .obj (or any format) file or manipulate the ElasticFoundationForce so that the bodies are perfectly rigid? Small deformations in the bodys of my simulation are creating discrepancies in the kinematics.

Thanks!

Hi all, is it possible to model rigid bodies with no mechanical properties? i.e., the calculations of young's modulus in HuntCrossleyForce and ElasticFoundationForce are not calculated.

As of right now I'm simulating the femur and tibia with ligaments attached undergoing shear, torque and compression at the joint. The stiffness is roughly as it should be - (1762 GPa)/(0.01 m). I set the dissipation factor to 0.8 to avoid any excessive bouncing of the femur (the tibia is locked in 3...

Hi all, just wanted to ask how the dissipation coefficient within the ElasticFoundationForce is supposed to be derived from desired materials. Thanks!